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Camera Obscura 1975: Lower Yellowstone Falls
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Camera Obscura 1975: Wildflowers II
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Camera Obscura 1975: Wildflowers I
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Camera Obscura 1975: Grand Tetons
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Camera Obscura 1975: Hayden Valley
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Camera Obscura 1975: Yellowstone Canyon
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Camera Obscura 1975: Lower Falls of the Yellowstone